optimize Dockerfile

Dockerfile

@@ -1,23 +1,39 @@
-# Use a Python base image
-FROM python:3.11-buster
+# Use a smaller base image
+FROM python:3.11-slim
 
-# Set the Poetry version as a build argument and install it
+# Set Poetry version
 ARG POETRY_VERSION=1.8.2
-RUN pip install poetry==${POETRY_VERSION}
 
-# Copy dependency files and install packages
-COPY ./pyproject.toml ./poetry.lock /app/
+# Install dependencies for Poetry and Python builds
+RUN apt-get update \
+    && apt-get install -y --no-install-recommends curl build-essential \
+    && pip install poetry==${POETRY_VERSION} \
+    && apt-get remove -y build-essential \
+    && apt-get autoremove -y \
+    && rm -rf /var/lib/apt/lists/*
+
+# Set the working directory
 WORKDIR /app
-RUN poetry install --no-root --no-interaction --no-ansi
 
-# Copy application code after dependencies are installed
+# Copy only dependency files first to leverage Docker cache for dependencies
+COPY ./pyproject.toml ./poetry.lock /app/
+
+# Install dependencies, skipping development dependencies
+RUN poetry config virtualenvs.create false \
+    && poetry install --no-root --only main --no-interaction --no-ansi \
+    && rm -rf /root/.cache/pypoetry
+
+# Copy the application code after installing dependencies to avoid rebuilding layers
 COPY ./app /app/app
 COPY entrypoint.sh /
 
-# Set volume for cache
+# Set cache volume
 VOLUME [ "/tmp/url-fairy-bot-cache/" ]
 
-# Set environment variables for PYTHONPATH
+# Make entrypoint executable
+RUN chmod +x /entrypoint.sh
+
+# Set environment variables for Python path
 ENV PYTHONPATH="/app"
 
 # Set the command to run the app as a module